It is a function that takes number of columns as an argument and return the smallest value among them It is a function that takes number of columns as an argument and return the largest value among them It is a clause to specify the maximum number of rows the result set must have SELECT column_name(s)FROM table_nameLIMIT number It is a special operator used with the WHERE clause to search for a specific pattern in a column SELECT column_name(s)FROM table_nameWHERE column_name LIKE pattern It is an operator used with the WHERE clause to check for the empty values SELECT column_name(s)FROM table_nameWHERE column_name IS NULL INSERT INTO table_name (column_1, column_2, column_3) VALUES (value_1, ‘value_2’, value_3) It is used to combine rows from different tables if the Join condition goes TRUE SELECT column_name(s)FROM table_1JOIN table_2 ON table_1.column_name = table_2.column_name It is used in SQL because the WHERE keyword cannot be used in aggregating functions SELECT column_name, COUNT(*)FROM table_nameGROUP BY column_nameHAVING COUNT(*) > value It is an clause in SQL used for aggregate functions in collaboration with the SELECT statement SELECT column_name, COUNT(*)FROM table_nameGROUP BY column_name It is used to remove the rows from a table It is used to create a new table in a database and specify the name of the table and columns inside itĭELETE FROM table_nameWHERE some_column = some_value It is a function that takes the name of a column as argument and counts the number of rows when the column is not NULLĬREATE TABLE table_name ( column_1 datatype, column_2 datatype, column_3 datatype) SELECT COUNT(column_name)FROM table_name
It is a statement used to create different outputs inside a SELECT statement SELECT column_name,CASEWHEN condition THEN ‘Result_1’WHEN condition THEN ‘Result_2’ELSE ‘Result_3’ENDFROM table_name
It is an operator used to filter the result within a certain range SELECT column_name(s)FROM table_nameWHERE column_name BETWEEN value_1 AND value_2 It is used to aggregate a numeric column and return its average It is an keyword in SQL that is used to rename a column or table using an alias name SELECT column_name AS ‘Alias’FROM table_name It is an operator that is used to combine two conditions SELECT column_name(s)FROM table_nameWHERE column_1 = value_1 AND column_2 = value_2 It is used to add columns to a table in a database ALTER TABLE table_name ADD column_name datatype